Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R17 2019 April-May 843AE Aprilmay Java Programming Previous Question Paper
R17
Code No: 843AE
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA III Semester Examinations, April/May - 2019
JAVA PROGRAMMING
Time: 3hrs
Max.Marks:75
Note: This question contains two parts A and B.
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries
10 marks and may have a, b, c as sub questions.
PART - A
5 ? 5 Marks = 25
1.a) What is the significance of Java virtual machine?
[5]
b) What are the uses of "final" keyword?
[5]
c) What are the methods that support interthread communication?
[5]
d) Explain Adjustment Event class.
[5]
e) What is the difference between an applet and an application.
[5]
PART - B
5 ? 10 Marks =50
2.
List out various bitwise operators. Explain them with suitable examples.
[10]
OR
3.a)
Distinguish between data abstraction and data encapsulation.
b)
Explain about the type conversion with an example.
[5+5]
4.a) What is a package? How will you define a package and import it.
b)
What are the benefits of Inheritance?
[5+5]
OR
5.
How does Java support multiple Inheritances? Explain with an example.
[10]
6.
What are thread priorities? Explain with suitable examples.
[10]
OR
7.
Explain is Alive() and join() methods of thread class with suitable example.
[10]
8.
Distinguish between Text Field and Text Area classes. List and explain various
methods of those classes.
[10]
OR
9.
Write about layout managers.
[10]
10.
Write an applet which will scroll "Java programming" from right to left across the
applet's window.
[10]
OR
11.
Explain J Check Box and J Radio Button classes.
[10]
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This post was last modified on 17 March 2023